What comb type is this?

[Chicicki]

View attachment 4305897

 

[Chicicki]

View attachment 4305897

 

[Cloverr39]

Looks like a walnut comb to me

 

[Chicicki]

Looks like a walnut comb to me

When I cross her with a single combed rooster I mostly get single combed chicks though

 

[Cloverr39]

When I cross her with a single combed rooster I mostly get single combed chicks though

Single comb is recessive to walnut, so she likely carries the genes needed to pass single comb down to her chicks.

 

[RoostersAreAwesome]

When I cross her with a single combed rooster I mostly get single combed chicks though

Do you have pictures of her offspring?

 

[Otcho]

When I cross her with a single combed rooster I mostly get single combed chicks though

This is possible because of the loci (plural of locus) involved in chicken comb shapes. Both the rose comb locus (r+/r+, R/r+, or R/R) and the pea comb locus (p+/p+, P/p+, or P/P) determine what type of comb is expressed.

Single Comb, the wildtype version of this gene, is written r+/r+ p+/p+ or rrpp, meaning that neither the Rose Comb mutation (R) nor the Pea Comb mutation (P) are present.

Rose Combed birds have one or more copies of the Rose Comb mutation (R). They can be either R/R (RRpp) or R/r+ (Rrpp). This can also be written R_pp, with the underscore behaving like an unknown "x" variable in algebra.

Pea Combed birds have one or more copies of the Pea Comb mutation (P). They can be either P/P (rrPP) or P/p+ (rrPp). Alternatively, the Pea Comb genotype can be written rrP_.

If both the Rose Comb and Pea Comb mutations are present, then the bird will have a Walnut Comb. The Walnut Comb genotype can be RRPP, RrPP, RRPp, or RrPp. Including the underscore, the Walnut Comb genotype can be written R_P_.

Because Walnut Combed birds like yours can have only one copy of the Rose and Pea Comb mutations (i.e., RrPp), there's a chance that they pass neither onto their offspring.

For example, a Walnut Combed (RrPp) x Single Combed (rrpp) cross would produce 25% RrPp (Walnut Combed), 25% Rrpp (Rose Combed), 25% rrPp (Pea Combed), and 25% rrpp (Single Combed) offspring.

When I need to calculate crosses with multiple traits, I use a Punnett Square calculator like this one

 

[Chicicki]

This is possible because of the loci (plural of locus) involved in chicken comb shapes. Both the rose comb locus (r+/r+, R/r+, or R/R) and the pea comb locus (p+/p+, P/p+, or P/P) determine what type of comb is expressed.

Single Comb, the wildtype version of this gene, is written r+/r+ p+/p+ or rrpp, meaning that neither the Rose Comb mutation (R) nor the Pea Comb mutation (P) are present.

Rose Combed birds have one or more copies of the Rose Comb mutation (R). They can be either R/R (RRpp) or R/r+ (Rrpp). This can also be written R_pp, with the underscore behaving like an unknown "x" variable in algebra.

Pea Combed birds have one or more copies of the Pea Comb mutation (P). They can be either P/P (rrPP) or P/p+ (rrPp). Alternatively, the Pea Comb genotype can be written rrP_.

If both the Rose Comb and Pea Comb mutations are present, then the bird will have a Walnut Comb. The Walnut Comb genotype can be RRPP, RrPP, RRPp, or RrPp. Including the underscore, the Walnut Comb genotype can be written R_P_.

Because Walnut Combed birds like yours can have only one copy of the Rose and Pea Comb mutations (i.e., RrPp), there's a chance that they pass neither onto their offspring.

For example, a Walnut Combed (RrPp) x Single Combed (rrpp) cross would produce 25% RrPp (Walnut Combed), 25% Rrpp (Rose Combed), 25% rrPp (Pea Combed), and 25% rrpp (Single Combed) offspring.

When I need to calculate crosses with multiple traits, I use a Punnett Square calculator like this one

I’ve actually never gotten a rose combed bird from her though I only got singles and chicks with her exact comb type only difference is that she has 1 horn and her offspring will have 2 will try to get a picture of them when I get the chance

 

[NatJ]

I’ve actually never gotten a rose combed bird from her though I only got singles and chicks with her exact comb type

Her comb looks like a rose comb to me. If she produced chicks with combs like hers, I would think they have rose combs too.

only difference is that she has 1 horn and her offspring will have 2 will try to get a picture of them when I get the chance

Hmm, I wonder if she's got a duplex comb gene? (V or Buttercup comb). That would explain 2 horns on the combs of the chicks, but I would not have expected it to make a comb shape like what she is showing. Definitely an interesting situation here, no matter which explanation turns out to be correct.